An internal Investigative committee charged with assessing evidence of institutional doping in Russia found no proof and pinned the blame solely on former Moscow Laboratory director Grigory Rodchenkov.
They have vowed to launch a formal request to extradite Rodchenkov back from United States so that he can face charge for abuse of office.
There appears no prospect of this happening, however, given how Rodchenkov is currently in a witness protection programme and that Russia and the US have no extradition treaty.
"The committee denies the arguments of the independent WADA expert McLaren, about the substitution of positive doping samples of Russian athletes for negative ones, at the Olympic Games in the anti-doping laboratory in Sochi, as well as the existence in Russia of some state doping programme to win the maximum number of medals for Russia," Investigative Committee spokesperson Svetlana Petrenko told the Sputnik news agency.
"The investigators have questioned more than 700 athletes, coaches, medical workers of the Russian national teams living across the whole territory of Russia, employees of the All-Russian Sports Federations, the Centre for Sports Training of the Russian National Teams, Russian Anti-Doping Agency and the Anti-Doping Centre.
"But none of them have confirmed the existence of a state doping programme,"